First grow hydro drip system suggestions wanted

So this is my first indoor grow using a homemade drip system with a 150w HPS. I'm using Earth Juice organic nutes.

My 2 seedlings here are only 9 days old and I started counting as soon as the heads where sticking out of the rockwool.


Should I leave the light on 24/0 till the have a couple more nodes or would it be ok to switch to 18/6?

How so they look? How am I doing? Any suggestions on what I can do to make it better? Thanks alot in advance.

keep it on 24 hours for another week. and make sureyou water the leaves of the plant, this is vital as it can give it an extra boost in it's early seeding stage. trust me i've doing it for years.